Google Cloud Datastore

We use the Namespace in Cloud Datastore to differentiate applications (Perf, Gold) and different installations of the same application (Perf, Perf-Android, Gold, Gold-PDFium). Since there may end up being many namespaces, a naming convention has been established:

Naming convention for namespaces

<app>[-<instance>]
<app>-localhost-<user>

Where ‘instance’ is the name of the instance, or blank if there is a canonical instance.